The ever excellent Federal Evidence Review has this nice summary and analysis of White v. Illinois.
While here they report:
Vacating cocaine distribution conviction and remanding because defendant’s trial included expert testimony by a witness about the contents of the drug identification analysis reported by a non-testifying expert, violating the Confrontation Clause; as the expert’s trial testimony "simply parroted the conclusion" of the non-testifying expert, the testifying expert’s "testimony amounted to no more than the prohibited transmission of testimonial hearsay," in United States v. Ramos-Gonzlez, __ F.3d __ (1st Cir. Dec. 9, 2011) (No. 10–1318).